Most people will likely not get shingles after c/t. However, I have read where some on forum have gotten shingles. I ended up getting shingles about one month after my taper ended. I believe the key issue is stress. If you are under a lot of stress at the end of taper or c/t, one might be careful as the immune system can be sensitive at this time.
If you get a rash on one side of the body or face, check with your doctor. If diagnosed early, there are anti viral medications that can prevent longer term issues. Other kinds of rashes on both sides of the body or itching have been reported as withdrawal side effects after the end of taper or c/t. Just be aware if you get a rash on one side of the body, to have it looked at. Shingles is apparently more common now in younger ages took, not just restricted to the over 50 crowd.